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GWD-13-Q40:
In response to viral infection, the immune systems of mice typically produce antibodies that destroy the virus by binding to proteins on its surface.  Mice infected with a herpesvirus generally develop keratitis, a degenerative disease affecting part of the eye.  Since proteins on the surface of cells in this part of the eye closely resemble those on the herpesvirus surface, scientists hypothesize that these cases of keratitis are caused by antibodies to herpesvirus.

Which of the following, if true, gives the greatest additional support to the scientists’ hypothesis?

A.        Other types of virus have surface proteins that closely resemble proteins found in various organs of mice.（无关）
B.        There are mice that are unable to form antibodies in response to herpes infections, and these mice contract herpes at roughly the same rate as other mice. （无关）
C.        Mice that are infected with a herpesvirus but do not develop keratitis produce as many antibodies as infected mice that do develop keratitis. （无关）
D.        There are mice that are unable to form antibodies in response to herpes infections, and these mice survive these infections without ever developing keratitis.异因异果加强：因为不分泌抗菌素，所以不生角膜炎）
E.        Mice that have never been infected with a herpesvirus can sometimes develop keratitis. （无关）

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Q 22: 调查类
Often patients with ankle fractures that are stable, and thus do not
require surgery, are given follow-up x-rays because their orthopedists
are concerned about possibly having misjudged the stability of the frac-
ture. When a number of follow-up x-rays were reviewed,（抽样调查） however, all
the fractures that had initially been judged stable were found to have
healed correctly. Therefore, it is a waste of money to order follow-up
x-rays of ankle fracture initially judged stable.
通常由于整形医师被认为对骨折的Stability有误诊现象，所以有踝骨折的病人会给与follow-up-rays。
检查A number of Follow-up-rays，发现已开始被诊断为Stable的骨折都愈合得很好。所以给与一开始就被诊断为Stable的病人Follow-up-rays是在浪费钱。
Which of the following, if true, most strengthens the argument?
A.        Doctors who are general practitioners rather than orthopedists are
less likely than orthopedists to judge the stability of an ankle frac-
ture correctly. （无关）
B.        Many ankle injuries for which an initial x-ray is ordered are revealed
by the x-ray not to involve any fracture of the ankle. （无关）
C.        X-rays of patients of many different orthopedists working in several
hospitals were reviewed.（强调样本采样随机，有结果代表性）
D.        The healing of ankle fractures that have been surgically repaired is
always checked by means of a follow-up x-ray. （无关）
E.        Orthopedists routinely order follow-up x-rays for fractures of bone
other than ankle bones. （无关）
1。原文推理应该是：因为很多FOLLOW-UP的X-RAY发现所有被诊断为（不是一开始的X-RAY）STABLE骨折的都愈合的很好。所以对这种骨折FOLLOW-UP的X-RAY不必要。
2。B不是答案。因为你说的推理的原因是开始X-RAY为STABLE的骨折的的情况。而B是说很多INJURIES，不一定是STABLE的，更不是骨折FRACTURES。
答案C：这些follow-up x-rays 来之于很多不同医院的不同医生的病人。即原文REVIEW的例子有代表性。能说明问题，即说明初诊断为stable骨折的都愈合得好，所以follow-up x-rays 其实是不必要的。

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14
In 1983 Argonia’s currency, the argon, underwent a reduction in value relative to the world’s strongest currencies. This reduction resulted in a significant increase in Argonia’s exports over 1982 levels. In 1987 a similar reduction in the value of the argon led to another increase in Argonia’s exports. Faced with the need to increase exports yet again, Argonia’s finance minister has proposed another reduction in the value of the argon.
本币贬值----出口增加。
重复操作
Which of the following, if true, most strongly supports the prediction that the finance minister’s plan will not result in a significant increase in Argonia’s exports next year?（支持反论——不是一定支持原文论点的，小心陷井）
A.        The value of the argon rose sharply last year against the world’s strongest currencies.
B.        In 1988 the argon lost a small amount of its value, and Aronian exports rose slightly in 1989.
C.        The value of Argonia’s exports was lower last year than it was the year before.
D.        All of Argonia’s export products are made by factories that were operating at full capacity last year, and new factories would take years to build.方案不可行。就算想增加也没有能力增加了
E.        Reductions in the value of the argon have almost always led to significant reductions in the amount of goods and services that Argonians purchase from abroad.